Haku Zynkyoku (伯壬旭, はく じんきょく, Count Mizunoe Asahi; born May 2, 1940), also known as Kojima Rokan (小島露観), is the Japanese founder of Zain (ザイン) and the Sirius Corporation (株式会社シリウス), and creator of Shinmon-gaku (神文学, シンモンガク; Divine Literature, described as "the study of aiming to reveal the secrets of man and the cosmos") and a successor theory called ZIGMA-ism, partially inspired by Theosophy and related occult teachings. The principle works of Zynkyoku detail a Cosmic Astral-Etheric War waged by ZIGMA Samurai, servants of ZZ (ザラズ, Zarazu), against the CAM (Christ - Abyss - Moloch) forces, including the Jews, occultists, miscegenationists, and so on.

In addition to his extensive writings and video lectures on the Cosmic War, Zynkyoku also attests to having originated a style of kenjutsu he calls Susashinryuu Maken (素戔神流; スサシンリュウ魔剣), the Demonic Sword Style of Takehaya Susanoo-no-Mikoto, for use in the battles against CAM.

In addition to his own writings, Kojima (with Seikichi Nakazato) translated Alice Ann Bailey's Initiation, Human and Solar, the 1922 Theosophy staple, into Japanese as 『イニシエーション: 進化の原点・神智学の秘伝』 (Inishiēshon).